# A236244 (b-file synthesized from sequence entry) 1 3 2 4 3 5 4 12 5 15 6 24 7 25 8 30 9 80 10 420 11 1860 12 146340 13 292680 14 3031080 15 6355440 16 202025100 17 404050200 18 674215920 19 1309133280 20 1759047480 21 3141424023360 22 6282848046720 23 19013977277880 24 2604166475512980 25 295127694592600800 26 1528966300926585360